What specs make a speaker full range?

M

mdp632

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Perhaps a simple question but, I honestly don't know. Figured some of the gurus here could help.

For example, is it the ability to go down to mid twenties and must be a three way design? All the way up to 40khz?

With regards to a dynamic driver design.
 
Approx 20hz to 20khz is a good starting point, but measurements can be deceiving as there is a big difference between measuring in room vs anechoic.
 
At the lower end, it appears 40-40khz is getting a solid pitch. I think in today's age, 20khz is too low.

For me, it'd be more in the 25-40khz range. In room response should get you more gain on the low end helping it reach down to or nearly to 20. That's just my opinion though.
 
DSkip said:
At the lower end, it appears 40-40khz is getting a solid pitch. I think in today's age, 20khz is too low.

For me, it'd be more in the 25-40khz range. In room response should get you more gain on the low end helping it reach down to or nearly to 20. That's just my opinion though.
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25-40Khz is hear-able ?
 
mdp632 said:
Perhaps a simple question but, I honestly don't know. Figured some of the gurus here could help.

For example, is it the ability to go down to mid twenties and must be a three way design? All the way up to 40khz?

With regards to a dynamic driver design.
Click to expand...

Without stating the precise measurement conditions and +/- dB range (and smoothing if you are looking at a published curve), most claimed frequency response specs are a combination of wishful thinking and pure fantasy.
 
How are you using the term "full range" or where did you see it? The reason I ask is "full range" is sometimes used in regards to single driver speaker, one driver doing full range. Or, more like, full range of its ability. These single drivers are typically high efficient and used with flea watt amps. There's a fair amount of them around, Zu Audio or Tekton come to mind. Some feel a single driver doing full range sounds better due to no crossovers, practically a amp to driver pure connection. Physics makes it very difficult for one driver to really cover a full range.
In car audio a full range speaker is one that is a simple single driver opposed to a coaxial or triaxial.

FYI - full range is DC to getting my dogs attention.
 
Mr Peabody said:
How are you using the term "full range" or where did you see it? The reason I ask is "full range" is sometimes used in regards to single driver speaker, one driver doing full range. Or, more like, full range of its ability. These single drivers are typically high efficient and used with flea watt amps. There's a fair amount of them around, Zu Audio or Tekton come to mind. Some feel a single driver doing full range sounds better due to no crossovers, practically a amp to driver pure connection. Physics makes it very difficult for one driver to really cover a full range.
In car audio a full range speaker is one that is a simple single driver opposed to a coaxial or triaxial.

FYI - full range is DC to getting my dogs attention.
Click to expand...

I honestly never thought of it this way. I was referring to entire speaker itself.
 
mdp632 said:
Perhaps a simple question but, I honestly don't know. Figured some of the gurus here could help.

For example, is it the ability to go down to mid twenties and must be a three way design? All the way up to 40khz?

With regards to a dynamic driver design.
Click to expand...


There is more to being fullrange than just bandwidth numbers , a 2 way design with a 6.5 inch woofer and a bandwidth of 30hz-22K will sound less "FullRange" than a 4 way design with 18inch woofers and a FR of 40-20K..
 
mdp632 said:
Perhaps a simple question but, I honestly don't know. Figured some of the gurus here could help.

For example, is it the ability to go down to mid twenties and must be a three way design? All the way up to 40khz?

With regards to a dynamic driver design.
Click to expand...
My definition includes faithful rendering of natural singing voices. That's 100 hz to 5kz.

Most convincing applications of this type need a subwoofer and "helper" tweeter.

See Bastanis
 
This shouldn't be a "loaded" question and it would appear to have but a single answer. Alas, we are dealing with audiophiles who can never really agree on anything. I think that Mike gave you the textbook answer in his response and some others chipped in some qualifiers which have obvious merit. If you were slightly confused before you asked your original question, you are likely to be really confused by the time this thread runs its course.
 
mep said:
This shouldn't be a "loaded" question and it would appear to have but a single answer. Alas, we are dealing with audiophiles who can never really agree on anything. I think that Mike gave you the textbook answer in his response and some others chipped in some qualifiers which have obvious merit. If you were slightly confused before you asked your original question, you are likely to be really confused by the time this thread runs its course.
Click to expand...
There's the ideal transducer, then there's what can be made today - and the inevitable compromises imposed by materials used.
 
Mike’s answer is consistent with the research I did when I was looking at speakers, altogether can't recall whether 20khz is actually audible. As I understood the question, it wasn’t about quality of sound, rather it was about whether the speaker produces sound that can be heard across the audible spectrum. I ended up going for speakers with a low frequency point of 24hz, which apparently is audible (but only just). I am a bass-head and so the big question for me now is whether to get sub woofers to take the low frequency point beyond audible hearing and into the realm of ‘feel’ (putting aside other possible advantages of sub woofers, such as relieving stress on the mid-bass range etc.).
 
anji12305 said:
My definition includes faithful rendering of natural singing voices. That's 100 hz to 5kz.

Most convincing applications of this type need a subwoofer and "helper" tweeter.

See Bastanis
Click to expand...

If you are not fullrange into the bass area , you will not get the voices correct or anything else IMO, the low bass regions helps to reinforce for proper timbre across the ( 40hz at the very least) range on everything, , same for the highs, added extension will have to be good pass 5Khz , figure to at least 14Khz. Extra wide bandwidth above 20khz means light mass and good BL, this extra "speed" may or may not translate into better more realistic sound..


regards
 
What do you consider full-range bass? And is it just a particular low frequency point or something more? For example, is 24hz low enough to qualify?
 
A -3db @28hz in room is good enough for very good bass fundamentals, speaker/cabinet size , sensitivity and xMax will help to define THD so no two speakers with a -3db @28 hz will sound the same, my previous example of one 18" woofer vs 3 (8") woofers for eg ..

An anechoic response of 32 hz -22K +/- 3db would be a solid FR performer , again speaker design and application applies , a mid size 3 way speaker vs a large 4 way will sound fundamentally different with the same response ....


You have to take audio specs as a full package , no one criteria makes one better than the other ..


regards
 
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